Would anyone play a 'good girl' being pounded by a bad guy? Whether he's an OC demon/Incubus or someone from the actual series is up to you!
A few fandoms in mind for this include (but am not limited to) are: Buffy, Jessica Jones, Guardians of the Galaxy, Charmed, Heroes, True Blood, Supernatural, Smallville, X-Men, Dexter, any Telltale Game ...